import numpy as np

a = np.array([
    [1,2,3],[4,5,6]
    ])
print(a)

# 嵌套元组
t = np.array((
    (1,2,3),(4,5,6)
))
print(t)

# 嵌套混合元素，用[]
mix = np.array([
    (1,2,3), [4,5,6], (7,8,9)
])
print(mix)